A sensitive, fast, selective, and reusable enzyme-free glucose sensor based on monodisperse AuNi alloy nanoparticles on activated carbon support. (March 2022)

• Record Type: Journal Article
• Authors: Arikan, Kubilay; Burhan, Hakan; Sahin, Elif; Sen, Fatih
• Is Part Of: Chemosphere. Volume 291:Part 3(2022)
• Publication Date: 2022-03
• Subjects: Glucose sensor -- Chronoamperometry -- Metal nanoparticle -- Nanosensor; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2021.132718
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: In this study, a glucose sensor modified with activated carbon supported gold-nickel (AuNi@AC) metal nanoparticles was prepared for the early diagnosis of diabetes. Electrochemical tests were carried out by determining the optimum working conditions of the prepared glucose sensor. The characterization analyses of the designed glucose sensor were performed by Transmission Electron Microscopy (TEM), X-Ray Diffraction (XRD), X-Ray Photoelectron Spectroscopy (XPS) and Raman Spectroscopy. It was determined that the average particle size of the nanoparticles in the AuNi alloy structure was 2.03 ± 0.37 nm. The determined detection limit of the AuNi@AC nanosensor was calculated as 0.41 μM as a result of the high linear range provided up to 1.7 mM. In addition, the sensitivity of AuNi@AC nanosensor to glucose, which has a high sensitivity value of 1955 μA mM −1 cm −2, was determined. Graphical abstract: Image 1 Highlights: The sensor modified with AuNi@AC nanosensor was prepared for the early diagnosis of diabetes. The determined detection limit of the AuNi@AC nanosensor was calculated as 0.41 μM. The sensitivity of AuNi@AC nanosensor to glucose has a high value of 1955 μA mM −1 cm −2 .